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Topic Area: Modeling
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Displaying records 31 to 40 of 88 records.
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31. Constructing Sibson Elements for a Rectangular Mesh
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6718
Topic: Modeling
Published: 2/1/2001
Author: David E. Gilsinn
Abstract: This paper documents the construction of a finite element, called the Sibson element. The shape function of this element is formed on rectangular grids by C^u1^ splines defined on a triangulation of each subrectangle by dividing it into four subtri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150813

32. Deconvolving LADAR Images Of Bar Codes for Construction Site Object Recognition
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7044
Topic: Modeling
Published: 10/1/2003
Authors: David E. Gilsinn, Geraldine S Cheok, Dianne M O'Leary
Abstract: This report discusses a general approach to reconstructing ground truth intensity images of bar codes that have been distorted by LADAR optics. The first part of this report describes the experimental data collection of several bar code images along ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50685

33. Derivation of Isosceles Trapezoidal Distribution
Topic: Modeling
Published: 12/1/2010
Authors: Raghu N Kacker, James F Lawrence
Abstract: It is known that, if the mid-point of a rectangular distribution is specified, the half-width is inexactly known, and the state of knowledge about the half-width may be represented by a narrower rectangular distribution then the resulting distributio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904335

34. Design of the DEMO Fusion Reactor Following ITER
Series: Journal of Research (NIST JRES)
Topic: Modeling
Published: 7/1/2009
Authors: Geoffrey B McFadden, Paul R. Garabedian
Abstract: Runs of the NSTAB equilibrium and stability code show there are many 3D solutions of the advanced tokamak problem subject to axially symmetric boundary conditions. These numerical simulations based on mathematical equations in conservation form predi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902386

35. Dielectric Breakdown in a Simplified Parallel Model
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6174
Topic: Modeling
Published: 6/1/1998
Authors: H A Fowler, J E Devaney, John G Hagedorn, F Sullivan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900849

36. Discrete Fourier Series Approximation to Periodic Solutions of Autonomous Delay Differential Equations
Topic: Modeling
Published: 1/2/2006
Author: David E. Gilsinn
Abstract: We begin this expository essay by reviewing with examples what a typical engineer already knows about statistics. We then consider a central question in engineering decision making, i.e., given a computer simulation of high-consequence systems, how ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150014

37. Estimating Critical Hopf Bifurcation Parameters for a Second Order DelayDifferential Equation with Application to Machine Tool Chatter
Topic: Modeling
Published: 5/1/2002
Author: David E. Gilsinn
Abstract: Nonlinear time delay differential equations are well known to have arisen in models in physiology, biology and population dynamics. They have also arisen in models of metal cutting processes. Machine tool chatter, from a process called regenerative c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150815

38. Estimating Volumes of Near-spherical Molded Artifacts
Series: Journal of Research (NIST JRES)
Topic: Modeling
Published: 5/3/2010
Authors: David E. Gilsinn, Bruce R. Borchardt, Amelia Tebbe
Abstract: The Food and Drug Administration (FDA) is conducting research on developing reference lung cancer cancer lesions, called phantoms, to test computed tomography (CT) scanners and their software. FDA loaned two semi-spherical phantoms to the National In ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904645

39. Estimating Volumes of Simulated Lung Cancer Nodules
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7571
Topic: Modeling
Published: 7/15/2009
Authors: David E. Gilsinn, Bruce R. Borchardt, Amelia Tebbe
Abstract: Lung cancer is a disease of uncontrolled cell growth in tissues of the lung. Computed tomography (CT) shows promise in detecting lung cancers at earlier, more operable stages, when survival is better. CT scans generate multiple 2-D slice images of th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901958

40. Evaluation of 3D Interest Point Detection Techniques via Human-generated Ground Truth
Topic: Modeling
Published: 6/29/2012
Authors: Afzal A Godil, Helin Dutagaci
Abstract: In this paper, we present an evaluation strategy based on human-generated ground truth to measure the performance of 3D interest point detection techniques. We provide quantitative evaluation measures that relate automatically detected interest point ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911521